Mixing-machine.



F. A. CONNOLLY.

MIXING MACHINE.

APPLICATION FILED JULY 25.1916.

L2@4,343. Patented Nov. 7, 1916.

2 SHEETS-SHEET I.

V BE

' mil- Eh-1 uanfoz j' mz F. A. CONNOLLY.

MIXING MACHINE.

APPLICATION FILED JULY 25.1916.

Patented Nov. 7, 1916.

2 SHEETS-SHEET 2.

Suva 14km 1 7% amma r-nnrrx a. connonnr, or roiurron LAKES, nnw annsnr.

MIXING-MACHINE.

specification of Letters lPatent.

neonate.

Patented Nov. Y, T916.

Application filed July 25, 1916. Serial Ito. 111,237.

ing-Machines; and T do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to improvements in mixers of the type commonly usedfor cement and concrete, but it is to be-understood that the machine isnot limited to any specific application, it being adaptable for mixingnumerous other materials such for instance as plain or smokeless powder.

The ob ect of the invention is to provide a comparatively simple andinexpensive, yet highly eficient and durable mixing device having novelmeans for expeditiously agitating the numerous kinds of plasticmaterial.

With this general object in View, the invention resides in certain novelfeaturesot construction and in unique combinations of parts to behereinafter fully described and claimed, the descriptive matter beingsupplemented by the accompanying drawings which constitute a part ofthis application and in which i Figure 1 is an end elevation of a mixerconstructed .in accordance with my invention; Fig. 2 is'a centrallongitudinal section thereof taken on the plane of the line 2-2 of Fig.1; Fig. 3is a vertical transverse section on the plane oi the line 33 ofFig. 2;

and Fig. 4- is a partial elevation of the end of the machine oppositethat disclosed in Fig. 1. v t

In specifically describing the construction shown in the drawings abovebriefly described, similar characters will be employed to designatecorresponding parts throughout the several views and reference will beherein made to the numerous elements by their respective indices. Tothis end, the numeral 1 designates a suitable frame preferablyconstructed of angle iron, said frame being shown in the presentembodiment of the invention as mounted on a truck 2 which extendslaterally therefrom and carries an engine or the like? which serves todrive the mixing mechanism to be described.

A pair of horizontal shafts d extend longitudinally of the machine andhave mounted thereon rollers 5 which support the weight of a main mixingdrum 6, this drum being of cylindrical contour and being preferablyformed of two sections bolted or otherwise secured together as indicatedat 7. The perlphery of the drum 6 is provided with guide flanges or ribs8 which engage the sides of the rollers 5 and thus serve to preventendwise shifting of the drum.

One end of drum 6 has formed therein a central opening of circularshape, into which opening a ortion of a bearing ring 9 fits snugly as sown clearly in Fig. 2, said ring belng secured in place by bolts 10. Theperiphery of the ring 9 has formed thereon a sprocket 11 around which'asprocket chain 12 passes, said chain being trained aroundanothersprocket 13 which is driven from the engine 3 in the direction ofthe arrows in Fig. 1. The opposite end of the drum 6 has therein acircular opening it and a swinging delivery chute 15 is mounted on theframe 1 to be moved into the drum through said opening as shown indotted lines in Fig. 2, the interior of the drum being equipped with aplurality of pockets 16 adapted to lift the mixed material to the upperside of said drum and to then deposit said material upon the chute 15which will conduct it into any suitable receptacle, not shown. Aplurality of angularly disposed vanes 17 are formed on the interior ofthe drum 6 and are so set as to convey the plastic material in said drumtoward the delivery end thereof at which it will be acted on by thepockets 16. Other vanes 18 extend angularly in the opposite vdirectionfrom the vanes 17 and assist in edectively agitating the material. Topermit the machine to operate as required, it is necessary that thevanes 17 exceed in number the vanes 18, four of the former beingpreferably employed in connection with two of the latter.

An auxiliary drum 19 projects into the drum 6 through the bearing ring 9thereof as depicted most clearly in Fig. 2, the outer end oi said drum19 being in communicat1on w1th an inlet chute or hopper 20, while theinner end of said drum is formed with a plurality of openings 21 in theperipheral wall thereof, said openings being adapted to deliver pheplastic material from the drum 19 into the adjacent end of drum 6. Asprocket 22 is formed as an integral part of the drum 19 and receivesthereon a sprocket chain 23 driven from a sprocket 24: on theshaft ofthe engine 3, said shaft being shown in the present embodiment of theinvention as having thereon a spur gear 25 meshing with a similar gear26 which is secured on the shaft of the sprocket 13. By this arrangementthe two sprockets 13 and 24 will be reversely driven so that the drums 6and 19 will rotate in opposite directions.

A shaft 27 which is preferably hollow is formed integrally with andextends from the axis of the inner end of the drum 19, the free end ofsaid shaft being rotatably mounted in a suitable bearing 28 carried bythe frame 1 and disposed at the center of the opening 14. Arms 29radiate from the shaft 27 and carry paddles 30 on their outer ends, saidarms being formed integrally with the shaft while the paddles aresimilarly connected with said arms and to the drum 19, this constructionbeing easy and inexpensive to manufacture.

Preferably used in connection with the parts above described is a gatevalve 31 operable at will from a hand lever 32, said valve moving acrossthe delivery end of the hopper 20 to allow or obstruct the passage ofthe material to be mixed from said hopper into the drum 19.

In operation, the material to be operated upon by the machine isdeposited in the hopper 20 and by means of the gate valve 31, thepassageof this material in the drum 19 is controlled. From this drum,the plastics enter the drum- 6 through the openings 31 and are now actedupon by the arms 29, paddles 30, vanes 17 and 18 and pockets 16. Sinceall parts carried by the drum 6 are moved in opposite directions fromthose of drum 19, the mixing operation will be effectively and quicklyperformed, and when the material has been agitated to the requiredextent, the chute 15 will be swung to the dotted line position shown inFig. 2 and will thus receive the mixed material which is raised by thepockets 16, as said material falls from these pockets. o

By constructing the improved machine in the manner shown and described,it may be manufactured and marketed at a minimum cost and withcomparative ease and in operation it will be highly eflicient anddurable. For these reasons, the construction shown and describedconstitutes the preferred form of the machine. It is to be understood,however, that within the scope of the invention as claimed, numerousdischarging the material into the main drum, means for driving the twodrums in opposite directions, separate agitating means rotatable withsaid drums and operating adjacent each other, and means for permittingthe discharge of the mixed material from the main drum.

2. A mixer of the class described comprisinga main drum having at oneend an opening, an auxiliary drum projecting into said opening andhaving an open outer end to receive the material to be mixed, the innerend of sald auxiliary drum having one or more openings'for dischargingthe material into the main drum, means for rotating the two drums inopposite directions, an agitator carried by the inner end of theauxiliary drum and disposed in the main drum, agi- I tating means on theinterior of said main drum, and means for permitting the discharge ofthe mixed material from said main drum.

3. A mixer of the class described compris ing a main drum having in oneend an opening, an auxiliary drum extending into said main drum throughsaid opening, said auxiliary drum having an open outer end to receivethe material to be mixed and having a closed inner end formed with oneor more openings for discharging the material into the main drum, meansfor rotating the two drums in opposite directions, a. shaft extendingaxially from the inner end of the auxiliary drum through the main drumand having its free end rotatably supported, arms radiating from saidshaft, paddles on the outer ends of said arms, agitating means on theinterior of the main drum, and means for permitting the discharge of themixed material from said main drum.

In testimony whereof I have hereunto set my hand inthe presence of twosubscribing witnesses.

FRANK A. CONNOLLY.

Witnesses:

A. L. DE Bow, MINNIE E. MICKENS.

